Re: [PATCH net V4 2/2] igb: offer a PTP Hardware Clock instead of the timecompare method
From: Richard Cochran <richardcochran@gmail.com>
Date: 2012-03-22 06:41:07
On Wed, Mar 21, 2012 at 05:50:34PM -0400, chetan loke wrote:
Richard - Intent is to make the readers(get_time) wait (or return last read value if the seq_counter tripped because you know that this value was recent) and let the tx/rx path continue. I haven't looked in more details but as Jake mentioned you will also need to change the way you read the values(by not using timecounter_read in get_time).
I don't get what you guys are saying. How can you avoid the spin lock around the two time register reads? How about a patch or some pseudo code? Thanks, Richard ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired